GM LS Ignition Parts & Upgrades

Simplify your EFI conversion with MSD’s Atomic EFI systems—built for power, reliability, and easy installation.

Get more spark for your buck with MSD's latest deals. Browse sale and clearance ignition products, wiring components, EFI parts, and more.

Power, control, and clean wiring—MSD’s electrical components help you build a reliable, race-ready system. From solid-state relays and fuse blocks to switches, harnesses, and power distribution modules, MSD gives you the tools to wire it right the first time—whether it's for the street, strip, or trail.

MSD ignition boxes are the spark behind the spark—delivering high-output energy, precise timing control, and reliable performance for street, strip, circle track, or off-road. Whether you're lighting up a small-block, big-block, or modern EFI setup, MSD ignition boxes give your engine the fire it needs to win.

High-performance MSD intake manifolds designed for maximum airflow, throttle response, and horsepower gains in racing or street/strip applications. Optimized for EFI and boosted engines.

MSD Super Conductor Spark Plug Wires deliver industry-leading performance with ultra-low resistance and high EMI suppression. Available in direct-fit, universal, and race-tailored sets for domestic and import engines.

MSD High-Torque Starters are built to crank hard, hot, and fast—no matter what you’re running. Designed for high-compression engines and tough heat-soaked conditions, these compact, gear-reduction starters deliver maximum torque and reliable starts every time. Street or strip, MSD fires it up.

Take full control of your automatic with MSD’s transmission controllers. Whether you're swapping in a modern 4L60E, 4L80E, or other electronically controlled trans, our controllers offer plug-and-play simplicity with customizable shift points, line pressure, and performance settings—right from the driver's seat.